Modelagem de pórticos em concreto armado preenchidos com alvenaria participante
Autor(a) principal: | |
---|---|
Data de Publicação: | 2022 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional Manancial UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/24212 |
Resumo: | In framed systems, the masonry has the main role of sealing, however there is the knowledge of its contribution to the lateral stiffness and stresses distribution between the structural elements. Despite this understanding, it is not usual, the structural design taking into account the walls as part of bracing system of building. There are international standards that consider the walls influence in resistance gain and stiffness to horizontal loads, but normally they are applicable to frames with one story and one span. The approach for national standard to a frame-masonry system is recent, there are yet some doubts by designs to its implementation. The simplest model able to account the masonry as integral part of structure in framed systems is through the wall simulation as single diagonal strut, known as Equivalent Strut Model. This method usually has good results for global analysis of structure, however for the assessment of local effects, it is deficient. In this case, models with multi-struts or analyses through finite elements are more suitable. The behavior of reinforced concrete frames infilled with masonry was assessed which they were subjected to horizontal loads. The results were sought that could serve as parameters to be used by designers for structural design aid. For this purpose, it was evaluated the shearing forces and bending moments in lower beam and left columns, besides lateral displacement. Numerical simulations through Finite Element Method (FEM) were performed whose stresses and displacements were considered as reference. Multistruts models with two and three parallel struts, besides two crossed struts were proposed. The values were compared in relation to plane models and classic models of single strut. In the assessed frames, it was seen that the single struts models were inappropriate for evaluation of shearing forces. The models with two crossed struts showed good estimation for maximum shearing force due to interaction masonryframe. Models with two parallel struts were more appropriated in predicting the bending moment in the most critical sections due to horizontal loads. The most models with proposed multi-struts led to good estimation for lateral displacement. In this case, the models with single struts also produced satisfactory results. |
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2022-04-28T14:32:21Z2022-04-28T14:32:21Z2022-02-22http://repositorio.ufsm.br/handle/1/24212In framed systems, the masonry has the main role of sealing, however there is the knowledge of its contribution to the lateral stiffness and stresses distribution between the structural elements. Despite this understanding, it is not usual, the structural design taking into account the walls as part of bracing system of building. There are international standards that consider the walls influence in resistance gain and stiffness to horizontal loads, but normally they are applicable to frames with one story and one span. The approach for national standard to a frame-masonry system is recent, there are yet some doubts by designs to its implementation. The simplest model able to account the masonry as integral part of structure in framed systems is through the wall simulation as single diagonal strut, known as Equivalent Strut Model. This method usually has good results for global analysis of structure, however for the assessment of local effects, it is deficient. In this case, models with multi-struts or analyses through finite elements are more suitable. The behavior of reinforced concrete frames infilled with masonry was assessed which they were subjected to horizontal loads. The results were sought that could serve as parameters to be used by designers for structural design aid. For this purpose, it was evaluated the shearing forces and bending moments in lower beam and left columns, besides lateral displacement. Numerical simulations through Finite Element Method (FEM) were performed whose stresses and displacements were considered as reference. Multistruts models with two and three parallel struts, besides two crossed struts were proposed. The values were compared in relation to plane models and classic models of single strut. In the assessed frames, it was seen that the single struts models were inappropriate for evaluation of shearing forces. The models with two crossed struts showed good estimation for maximum shearing force due to interaction masonryframe. Models with two parallel struts were more appropriated in predicting the bending moment in the most critical sections due to horizontal loads. The most models with proposed multi-struts led to good estimation for lateral displacement. In this case, the models with single struts also produced satisfactory results.Em sistemas aporticados, a alvenaria possui função principal de vedação, porém tem-se o conhecimento da sua contribuição no ganho de rigidez lateral e distribuição de esforços entre os elementos estruturais. Apesar desta compreensão, não é usual, o dimensionamento estrutural considerando as paredes como parte do sistema de contraventamento da edificação. Há normalizações internacionais que consideram a influência das paredes no ganho de capacidade e rigidez a ações horizontais, porém normalmente são aplicáveis a pórticos de um andar e um vão. A abordagem por norma nacional de um sistema pórtico-alvenaria é recente, havendo ainda algumas dúvidas por projetistas para sua aplicação. O modelo mais simples capaz de considerar as alvenarias como parte integrante da estrutura é através da simulação da parede como uma barra diagonal birrotulada, conhecido como Modelo da Diagonal Equivalente. Este método costuma apresentar bons resultados para a análise global da estrutura, entretanto para a avaliação de efeitos locais, mostra-se deficitente. Neste caso, modelos com múltiplas diagonais ou análises através de elementos finitos mostram-se mais adequados. Avaliou-se o comportamento de pórticos em concreto armado preenchidos em alvenaria submetidos a ações horizontais. Buscaram-se resultados que pudessem servir de parâmetros a serem usados por projetistas no auxílio ao dimensionamento estrutural. Para esta finalidade, avaliaram-se o esforço cortante e momento fletor em parte de vigas e pilares, além do deslocamento lateral. Realizaram-se simulações numéricas via Método dos Elementos Finitos, cujos esforços e deslocamentos foram considerados como referência. Propuseram-se modelos de múltiplas diagonais com duas e três diagonais paralelas, além de duas diagonais cruzadas, comparando os valores em relação aos modelos planos e modelos clássicos de diagonal simples. Nos pórticos avaliados, observou-se que os modelos de diagonais simples foram inadequados para a avaliação do esforço cortante. Os modelos com duas diagonais cruzadas apresentaram boa estimativa do esforço cortante máximo devido à interação pórticoalvenaria. Os modelos com duas diagonais paralelas foram mais apropriados na previsão do momento fletor nas seções mais críticas devido às ações horizontais. A maioria dos modelos de múltiplas diagonais propostos conduziu uma boa estimativa do deslocamento lateral. Neste caso, os modelos de diagonais simples também apresentaram resultados satisfatórios.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de TecnologiaPrograma de Pós-Graduação em Engenharia CivilUFSMBrasilEngenharia CivilAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessAlvenaria participantePórticos preenchidosEstruturas de concretoAnálise estruturalParticipating masonryInfilled framesConcrete structureStructural analysisCNPQ::ENGENHARIAS::ENGENHARIA CIVILModelagem de pórticos em concreto armado preenchidos com alvenaria participanteModelling of reinforced concrete frames infilled with participating masonryinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisKaminski Junior, Joãohttp://lattes.cnpq.br/8734131577465605Alva, Gerson Moacyr SisniegasMohamad, GihadPinheiro, Marco Antonio SilvaParsekian, Guilherme ArisHaach, Vladimir Guilhermehttp://lattes.cnpq.br/0319942143783226Rigão, Alessandro Onofre300100000003600600600600600600600600fb163aa3-1a40-4810-9cca-8f94eabee26c79067a60-e1e9-4d77-9581-4b5416a37900b1227bb5-d35f-46f3-b44b-6c8db2db86aef42f5437-5d3d-4799-afb6-ef075df21b8d025d3120-29a2-4c2c-8f8e-11cbb7db033fc18abbca-453c-4b2d-8e43-b5ac9052bab627c7c709-c26a-4292-9f6f-1d24c1895ef0reponame:Repositório Institucional Manancial UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALTES_PPGEC_2022_RIGAO_ALESSANDRO.pdfTES_PPGEC_2022_RIGAO_ALESSANDRO.pdfTeseapplication/pdf59010954http://repositorio.ufsm.br/bitstream/1/24212/1/TES_PPGEC_2022_RIGAO_ALESSANDRO.pdf59b21b1bfa43649c6091df3af2912fcdMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8805http://repositorio.ufsm.br/bitstream/1/24212/2/license_rdf4460e5956bc1d1639be9ae6146a50347MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-816http://repositorio.ufsm.br/bitstream/1/24212/3/license.txt6eeec7985884eb94336b41cc5308bf0fMD531/242122022-04-28 12:31:08.482oai:repositorio.ufsm.br:1/24212Q3JlYXRpdmUgQ29tbXVucw==Repositório Institucionalhttp://repositorio.ufsm.br/PUBhttp://repositorio.ufsm.br/oai/requestouvidoria@ufsm.bropendoar:39132022-04-28T15:31:08Repositório Institucional Manancial UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Modelagem de pórticos em concreto armado preenchidos com alvenaria participante |
dc.title.alternative.eng.fl_str_mv |
Modelling of reinforced concrete frames infilled with participating masonry |
title |
Modelagem de pórticos em concreto armado preenchidos com alvenaria participante |
spellingShingle |
Modelagem de pórticos em concreto armado preenchidos com alvenaria participante Rigão, Alessandro Onofre Alvenaria participante Pórticos preenchidos Estruturas de concreto Análise estrutural Participating masonry Infilled frames Concrete structure Structural analysis CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
title_short |
Modelagem de pórticos em concreto armado preenchidos com alvenaria participante |
title_full |
Modelagem de pórticos em concreto armado preenchidos com alvenaria participante |
title_fullStr |
Modelagem de pórticos em concreto armado preenchidos com alvenaria participante |
title_full_unstemmed |
Modelagem de pórticos em concreto armado preenchidos com alvenaria participante |
title_sort |
Modelagem de pórticos em concreto armado preenchidos com alvenaria participante |
author |
Rigão, Alessandro Onofre |
author_facet |
Rigão, Alessandro Onofre |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Kaminski Junior, João |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/8734131577465605 |
dc.contributor.advisor-co1.fl_str_mv |
Alva, Gerson Moacyr Sisniegas |
dc.contributor.referee1.fl_str_mv |
Mohamad, Gihad |
dc.contributor.referee2.fl_str_mv |
Pinheiro, Marco Antonio Silva |
dc.contributor.referee3.fl_str_mv |
Parsekian, Guilherme Aris |
dc.contributor.referee4.fl_str_mv |
Haach, Vladimir Guilherme |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0319942143783226 |
dc.contributor.author.fl_str_mv |
Rigão, Alessandro Onofre |
contributor_str_mv |
Kaminski Junior, João Alva, Gerson Moacyr Sisniegas Mohamad, Gihad Pinheiro, Marco Antonio Silva Parsekian, Guilherme Aris Haach, Vladimir Guilherme |
dc.subject.por.fl_str_mv |
Alvenaria participante Pórticos preenchidos Estruturas de concreto Análise estrutural |
topic |
Alvenaria participante Pórticos preenchidos Estruturas de concreto Análise estrutural Participating masonry Infilled frames Concrete structure Structural analysis CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
dc.subject.eng.fl_str_mv |
Participating masonry Infilled frames Concrete structure Structural analysis |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
description |
In framed systems, the masonry has the main role of sealing, however there is the knowledge of its contribution to the lateral stiffness and stresses distribution between the structural elements. Despite this understanding, it is not usual, the structural design taking into account the walls as part of bracing system of building. There are international standards that consider the walls influence in resistance gain and stiffness to horizontal loads, but normally they are applicable to frames with one story and one span. The approach for national standard to a frame-masonry system is recent, there are yet some doubts by designs to its implementation. The simplest model able to account the masonry as integral part of structure in framed systems is through the wall simulation as single diagonal strut, known as Equivalent Strut Model. This method usually has good results for global analysis of structure, however for the assessment of local effects, it is deficient. In this case, models with multi-struts or analyses through finite elements are more suitable. The behavior of reinforced concrete frames infilled with masonry was assessed which they were subjected to horizontal loads. The results were sought that could serve as parameters to be used by designers for structural design aid. For this purpose, it was evaluated the shearing forces and bending moments in lower beam and left columns, besides lateral displacement. Numerical simulations through Finite Element Method (FEM) were performed whose stresses and displacements were considered as reference. Multistruts models with two and three parallel struts, besides two crossed struts were proposed. The values were compared in relation to plane models and classic models of single strut. In the assessed frames, it was seen that the single struts models were inappropriate for evaluation of shearing forces. The models with two crossed struts showed good estimation for maximum shearing force due to interaction masonryframe. Models with two parallel struts were more appropriated in predicting the bending moment in the most critical sections due to horizontal loads. The most models with proposed multi-struts led to good estimation for lateral displacement. In this case, the models with single struts also produced satisfactory results. |
publishDate |
2022 |
dc.date.accessioned.fl_str_mv |
2022-04-28T14:32:21Z |
dc.date.available.fl_str_mv |
2022-04-28T14:32:21Z |
dc.date.issued.fl_str_mv |
2022-02-22 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/doctoralThesis |
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doctoralThesis |
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http://repositorio.ufsm.br/handle/1/24212 |
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http://repositorio.ufsm.br/handle/1/24212 |
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por |
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por |
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300100000003 |
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Universidade Federal de Santa Maria Centro de Tecnologia |
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Programa de Pós-Graduação em Engenharia Civil |
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UFSM |
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Brasil |
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Engenharia Civil |
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Universidade Federal de Santa Maria Centro de Tecnologia |
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